I would definitely leave it at home. Because the whole time, whether I saw a loss or gain, I wouldn't believe what the scale said. It has to be in MY bathroom, sitting in the EXACT same spot for me to count it as accurate.
Plus, as others have said, this is a vacation, so enjoy yourself, but be mindful of eating as well as you can and being active. If this is indeed a lifestyle change and not a diet, then you're going to have times when you cannot weigh yourself. Enjoy yourself knowing that even if you come back with a couple (only a couple!!) of extra pounds, you know have the knowledge and tools you need to get right back into your routine.
To all the lucky ones heading out on vacation, have an excellent time!